Question

what direction will the equilibrium shift when hcl is added to the reaction below?
h₂(g) + cl₂(g) ⇌ 2hcl(g) + 184.6 j
shifts left or shifts to reactants shifts right or shifts to products

Explanation:

Step1: Identify the change

Adding HCl increases the concentration of the product (HCl).

Step2: Apply Le Chatelier's Principle

Le Chatelier's Principle states that if a stress (like changing concentration) is applied to a system at equilibrium, the system will shift to counteract the stress. Here, increasing product concentration (HCl) will make the system shift left (towards reactants) to reduce the excess product.

Answer:

shifts left or shifts to reactants